bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5809/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=41353, q=40 ncpus=2)
task:kworker/1:3     state:R  running task     stack:25480 pid:5809  ppid:2      flags:0x00004000
Workqueue: mld mld_ifc_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __local_bh_enable_ip+0x14b/0x1c0 kernel/softirq.c:413
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 rt6_uncached_list_add net/ipv6/route.c:147 [inline]
 icmp6_dst_alloc+0x386/0x400 net/ipv6/route.c:3338
 mld_sendpack+0x6c1/0xd60 net/ipv6/mcast.c:1840
 mld_send_cr net/ipv6/mcast.c:2150 [inline]
 mld_ifc_work+0x842/0xd60 net/ipv6/mcast.c:2686
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
rcu: rcu_preempt kthread starved for 1452 jiffies! g41353 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27080 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x30d/0x1590 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 10878 Comm: syz.2.1746 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:debug_check_no_locks_freed+0x23e/0x400 kernel/locking/lockdep.c:6594
Code: 24 60 f7 44 24 60 00 02 00 00 41 c6 44 36 04 f8 0f 85 fc 00 00 00 f7 44 24 30 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <49> c7 04 36 00 00 00 00 41 c7 44 36 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000005e80 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff88801b79e4d8 RCX: ffffffff8d131d00
RDX: ffff88801b79e4d8 RSI: dffffc0000000000 RDI: ffff888048652c80
RBP: ffffc90000005f80 R08: ffff88801b79da00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000100 R12: ffff88801b79e6c0
R13: 1ffff110036f3c9b R14: 1ffff92000000bd8 R15: ffff88801b79e6d0
FS:  00007fc04eedd6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e6a25ba6e CR3: 00000000601d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:1783 [inline]
 slab_free_freelist_hook+0xc1/0x1a0 mm/slub.c:1837
 slab_free mm/slub.c:3830 [inline]
 kmem_cache_free+0xf8/0x290 mm/slub.c:3852
 packet_rcv+0x15b/0x1410 net/packet/af_packet.c:2278
 dev_queue_xmit_nit+0xb0c/0xba0 net/core/dev.c:2385
 xmit_one net/core/dev.c:3640 [inline]
 dev_hard_start_xmit+0x150/0x790 net/core/dev.c:3660
 __dev_queue_xmit+0x198c/0x3630 net/core/dev.c:4454
 dev_queue_xmit include/linux/netdevice.h:3115 [inline]
 hsr_xmit net/hsr/hsr_forward.c:382 [inline]
 hsr_forward_do net/hsr/hsr_forward.c:473 [inline]
 hsr_forward_skb+0x12a9/0x20b0 net/hsr/hsr_forward.c:626
 hsr_dev_xmit+0x1e7/0x350 net/hsr/hsr_device.c:238
 __netdev_start_xmit include/linux/netdevice.h:4945 [inline]
 netdev_start_xmit include/linux/netdevice.h:4959 [inline]
 xmit_one net/core/dev.c:3644 [inline]
 dev_hard_start_xmit+0x269/0x790 net/core/dev.c:3660
 __dev_queue_xmit+0x198c/0x3630 net/core/dev.c:4454
 dev_queue_xmit include/linux/netdevice.h:3115 [inline]
 br_dev_queue_push_xmit+0x6b7/0x880 net/bridge/br_forward.c:53
 NF_HOOK+0x66e/0x700 include/linux/netfilter.h:304
 br_nf_post_routing+0xa3b/0xec0 net/bridge/br_netfilter_hooks.c:977
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:259 [inline]
 NF_HOOK+0x23e/0x3e0 include/linux/netfilter.h:302
 br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66
 br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1184 [inline]
 br_nf_forward_finish+0xa69/0xe90 net/bridge/br_netfilter_hooks.c:684
 NF_HOOK+0x66e/0x700 include/linux/netfilter.h:304
 br_nf_forward_ip+0xc78/0x10d0 net/bridge/br_netfilter_hooks.c:754
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:259 [inline]
 NF_HOOK+0x23e/0x3e0 include/linux/netfilter.h:302
 __br_forward+0x433/0x610 net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0xb5/0x150 net/bridge/br_forward.c:191
 br_flood+0x317/0x670 net/bridge/br_forward.c:237
 br_handle_frame_finish+0xf2d/0x15c0 net/bridge/br_input.c:215
 br_nf_hook_thresh+0x3cd/0x4a0 net/bridge/br_netfilter_hooks.c:1184
 br_nf_pre_routing_finish_ipv6+0x9e5/0xd20 net/bridge/br_netfilter_ipv6.c:-1
 NF_HOOK include/linux/netfilter.h:304 [inline]
 br_nf_pre_routing_ipv6+0x34d/0x6a0 net/bridge/br_netfilter_ipv6.c:184
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
 br_handle_frame+0x1240/0x14d0 net/bridge/br_input.c:424
 __netif_receive_skb_core+0xf94/0x3ab0 net/core/dev.c:5540
 __netif_receive_skb_one_core net/core/dev.c:5644 [inline]
 __netif_receive_skb+0x74/0x290 net/core/dev.c:5760
 process_backlog+0x380/0x710 net/core/dev.c:6088
 __napi_poll+0xbb/0x460 net/core/dev.c:6650
 napi_poll net/core/dev.c:6717 [inline]
 net_rx_action+0x65f/0xcc0 net/core/dev.c:6853
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:perf_swevent_get_recursion_context+0x52/0x150 kernel/events/core.c:9969
Code: 07 0f 87 d6 00 00 00 e8 bc 4f d8 ff 49 bf 00 00 00 00 00 fc ff df 48 8d 1c dd 30 2a a9 8c 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 14 cd 30 00 4c 8b 33 65 8b 05 02 93 54 7e 89 c3
RSP: 0018:ffffc90019cdecb0 EFLAGS: 00000246
RAX: 1ffffffff1952546 RBX: ffffffff8ca92a30 RCX: 0000000000080000
RDX: ffffc9000d442000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 0000000000000000 R08: ffffffff8e8c7caf R09: 1ffffffff1d18f95
R10: dffffc0000000000 R11: fffffbfff1d18f96 R12: ffffe8ffffa02990
R13: dffffc0000000000 R14: ffffc90019cded80 R15: dffffc0000000000
 perf_trace_buf_alloc+0x59/0x290 kernel/trace/trace_event_perf.c:410
 perf_trace_lock+0x19d/0x3b0 include/trace/events/lock.h:50
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x866/0x8c0 kernel/locking/lockdep.c:5765
 rcu_lock_release include/linux/rcupdate.h:344 [inline]
 rcu_read_unlock include/linux/rcupdate.h:819 [inline]
 trace_call_bpf+0x5dd/0x6c0 kernel/trace/bpf_trace.c:145
 perf_trace_run_bpf_submit+0x7a/0x1c0 kernel/events/core.c:10287
 perf_trace_lock+0x303/0x3b0 include/trace/events/lock.h:50
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x866/0x8c0 kernel/locking/lockdep.c:5765
 debug_objects_fill_pool+0xcc/0x790 lib/debugobjects.c:655
 debug_object_activate+0x36/0x500 lib/debugobjects.c:743
 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
 __call_rcu_common kernel/rcu/tree.c:2706 [inline]
 call_rcu+0xa6/0x900 kernel/rcu/tree.c:2837
 gro_cells_destroy+0x34e/0x3c0 net/core/gro_cells.c:128
 ip_tunnel_dev_free+0x19/0x60 net/ipv4/ip_tunnel.c:1044
 netdev_run_todo+0xbe7/0xdb0 net/core/dev.c:10631
 ip_tunnel_delete_nets+0x32f/0x380 net/ipv4/ip_tunnel.c:1158
 ops_exit_list net/core/net_namespace.c:178 [inline]
 setup_net+0x85a/0xa20 net/core/net_namespace.c:375
 copy_net_ns+0x35e/0x5d0 net/core/net_namespace.c:520
 create_new_namespaces+0x3ce/0x700 kernel/nsproxy.c:110
 copy_namespaces+0x42a/0x4a0 kernel/nsproxy.c:179
 copy_process+0x16f6/0x3da0 kernel/fork.c:2512
 kernel_clone+0x24b/0x8a0 kernel/fork.c:2918
 __do_sys_clone kernel/fork.c:3061 [inline]
 __se_sys_clone kernel/fork.c:3045 [inline]
 __x64_sys_clone+0x1b7/0x230 kernel/fork.c:3045
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc04df9de99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc04eedcfd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fc04e225fa0 RCX: 00007fc04df9de99
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000041200000
RBP: 00007fc04e033eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fc04e226038 R14: 00007fc04e225fa0 R15: 00007ffd1460dd88
 </TASK>
net_ratelimit: 150 callbacks suppressed
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
net_ratelimit: 1912 callbacks suppressed
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)
bridge0: received packet on team0 with own address as source address (addr:ca:f2:a7:e4:7f:b3, vlan:0)